Home / 3,685.32-5,085.54-2,113.20

Finding the Fourth Proportional to 3,685.32, 5,085.54 and 2,113.20

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Solution

The fourth proportional to 3,685.32, 5,085.54 and 2,113.20 is: 2,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.32 : 5,085.54 = 2,113.20 : x
  2. Step 2: Convert to fraction form
    3,685.32/5,085.54 = 2,113.20/x
  3. Step 3: Cross multiply
    3,685.32x = 5,085.54 × 2,113.20
  4. Step 4: Simplify right side
    3,685.32x = 10,746,763.13
  5. Step 5: Solve for x
    x = 10,746,763.13/3,685.32
  6. Step 6: Final answer
    x = 2,916.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.